Concrete form



Jan. 19,1926. 1,569,876

H. E. NOYES CONCRETE FORM Filed Mmrch 24, 1923 v @328 may.

Patented Jan. 19, 1926.

UNITED STATES HAROLD ELVVIN NOYES, OF CLAREMONT, NEW HAMPSHIRE.

CONCRETE FORM.

Application filed March 24, 1923.

To all whom it may concern:

Be it known that I, HAROLD ELWIN blows, a citizen of the United States, residing at Claremont, in the county of Sullivan and State of New Hampshire, have invented cer tain new and useful Improvements in Concrete Forms. of which the following is a full, clear, and exact specification.

My invention relates to concrete forms.

It has for its object to provide an improved concrete form and more particularly an improved removable concrete form. A further obj ect of my invention is to provide an improved collapsible concrete form especially adapted to use as an inside form for chimneys or the like. A still further object of my invention is to providean improved concrete form of improved, rugged and exceedingly simple construction, which comprises a small number of parts and which may be set up with facility in any desired length and removed with facility after the concretelms set, the construction at the same time being capable of being manufactured at small expense and withstanding the rough usage in service to which these devices are ordinarily subjected. These and other objects and advantages of my improved construction will however, hereinafter more fully appear.

In the accompanying drawings I have shown for purposes of illustration one embodiment which my invention may assume in practice, the same therein being illustrated as applied to an inside form for a concrete chimney although it will be understood that the invention may be applied to other uses.

In these drawings,

Fig: 1 is a side elevation of a form constructed in accordance with this embodiment of my invention and showing a plurality of elements disposed in longitudinally assembled relation, certain parts of the outer sheeting being broken away to facilitate illustration.

Fig. 2 is a vertical sectional View on line 2--2 of Fig. 1.

Fig. is a transverse sectional view on line 3-3 of Fig. 2.

In this illustrative construction it will be noted that a plurality of improved eX- pending; and collapsing means for the sheet metal form per so act on the form at different points in its length, improved means lwreinatter described. being provided. where- Serial No. 627,287.

by the form may be expanded and collapsed, and thereafter bodily withdrawn, as for ex ample from the top or a chimney.

Inasmuch as the same mechanisms 'for expanding and contracting the form may be utilized tln'oughout the length of the'iorm with either one set of mechanisms or a plurality of the same being used, depending upon the length of the opening to be provided, a description of one of these mechanisms will sutiice for all. Accordingly reference is made more particularly to Fig. 3. In this figure it will be noted that the outer surface of the form comprises a plurality of usual metal sheets, herein tour, 1, 2, 3, 4-, disposed on end and herein in the form of a rectangle with rounded corners, the sheets 1 and 3 herein being duplicates and the sheets 2 and 4 being duplicates, while each sheet is provided with a raised portion 5 adapted to overlap its neighbor in overlapping telescopic fashion as shown.

Inasmuch as the connections for each of the sheets 1 and 3 are identical and the connections for the sheets 2 and 4 are like wise identical, a description of these connections for the sheets 1 and 2 will sufice for both sets. itei e ring to sheet 1, it will be noted that, like the sheet l. (Fig. 2), it is suitably attached as by rivets 6 to a cross rib 7 of substantially L-shape having a rounded corner and provided in its ends with an in ternal T-shaped slot 8 which is adapted to receive the adjacent end of a rib 9 likewise otE L-shape but of T-shape cross section at its ends, to which rib the plate 2 is attached as by screws 10, the construction being such that the members may be moved in and out of one another to expand or collapse the form. More particularly, it will be noted that the member 7 is connected as by suitable screws 11 to a suitable transversely disposed corner or stay block 12, the screws 11 herein extending through the back wall of the T-shaped slot as illustrateed in Fig. 3, while the member 9 is similarly connected as b screws 13 to a similar corner or stay bloc: lt, the screws in this instance, however, extending entirely through the member 9.

Moreover, it will be noted that the two stay blocks 12 and 1 1 are spaced from one another and that each of the same has formed therein at a point adjacent its inner edge a T-shaped slot 15 in which exterd correspondingly formed Trshaped Wedges on opposite sides. of a relatively perpendicularly disposed wedge member 16, herein or" Lbeam cross section (see Fig. 3), which is capable of being moved in or out relative to the blocks to force the same apart or contract the same, the surfaces of the T-shapet slots in the blocks for this purpose being inclined similarly to the wedge as shown in Fig. 2. In the form of the invention illustrated, the wedge is is also carried on a longitudmall estenoing member 1?, herein in the form of an angle iron, suitably attached longitudinally and centrally ot the wedge member, as by rivets 18.

Here attention is also directed to the fact that the stay blocks 12 and 1d of the sheet sections 3, t are similarly connected by a wedge 16 and that similar wedge mechanisms 19 extend between the blocks 12 and 1st of the sheet-sections 1 and 4 and 2 and 3, these wedges moreover being connected to upstanding members similar to the members 17 previously described. Moreover attention isdirected to the fact that the members 17 and 20 extend longitudinally through the form carrying as many wedges 16, 19 in sets at different points and cooperating with dilterent sets of stay blocks and transverse rib members as may be necessary to give the desired rigidity to a torm oi the desired length, and that the member-s17, 2O likewise extend beyond the end of the sheet metal forms in such n'iamier as to enable them to be moved longitudinally from the end, as for example, from the top of a chimney, in such manner as to enable them to be operated as desired to expand or nuse contraction of the form from that point.

in the use of my improved construction it will be evident that a form may be provided of any desired length depending upon the requirement ot the particular work being done, and that one or more sets of transverse members, stay blocks and wedge mechanisms may be operated from an end of the form by moving the wedges 16 and 19 in such manner as to expand or contract the form. In a preferred operation, the two wedges 16 or the ditl'erent sets of wedges 16 are preferably forced inward simultaneously while the two wedges 19 or the different sets of wedges 19 are also preferably operated simultaneously. As a result, it will be evident that the action oi. each individual wedge will be such as to "force the adjacent blocks 12, 1 1 apart and thereay expand the form as desired, while the term due to the locking action of the wedge surfaces, will be maintained in any given expanded position depending upon the extent to which the wedges have been driven in. When, on the contrary, it is desired to remove the form, i. e. after the concrete has set. this may similarly be accomplished by simply reversely operating the wedges, the wedges 16 then preferably being pulled out simultaneously, while the wedges 19 are also preferably simultaneously pulled out. As a result of pulling out the wedges, it will here also be noted that due to the cooperating wedge surfaces, herein in the form of the shaped slot connection, the blocks 12, 1 1- of each set will be drawn together in such manner as to contract. the form in the desired fashion and thereby enable the same to be removed longitudinally from the opening. In this connection attention is also directed to the fact that by reason of the "i -shaped wedge connections and the location of the members 17. 20 relative to the wedges 16, 19, it is impossible for the wedges to be withdrawn longitudinally from any set oii' blocks 12, let, the blocks instead being limited in their contracting movement relative to the wedges by contact of their inner edges with the adjacent sides of the members 17, 20 so that as those members are withdrawn they must automatically carry with them all oi their cooperating mechanism including the blocks, the transverse connections 7, 9 and the form sheets 1, 2, 3, 1.

Asa result of my improvement, it will be observed that an exceedingly rugged construction is provided, the transverse members and the stay blocks cooperating with the wedge mechanism to produce a very rigid and strong construction requiring a small number of wedge mechanisms for a given length, although obviously the wedge mechanisms may be rei'ieated as often as may be necessary to give the desired strength to the form throughout its length. Moreover, by reason of tee wedge mechanism provided, not only is such a rugged and rigid construction produced, but a construction is pro vided in which the parts may be extended positively and quickly and to the desired degree by the average workman, it only being necessary tor the wedges to be (h 'ven in to given points indicated on the members 17, 20 to er: rand the form to various desired degrees, while, likewise due to the character 0t these means, it is tound possible to with draw the wedges and thereby collapse the form, quickly and positively by any manual or power means ordinarily available on a construction job. Here attention is also directed to the fact that by reason of the small number and simplicity of parts and the duplication of many parts, the cost of manufacture of my improved form is very low. These and other objects and advantages of my improved construction will, however, be clearly apparent to those skilled in the art.

While I have in this application specifically described one embodiment which my invention may assume in practice, it will be miderstood that this form of the same is shown for purposes of illustration and that the invention may no modified and embodied in various other forms without departing sin from its spirit or the scope of the appended claims.

What I claim as new and desire to secure by ill otters Patent is:

l. A concrete form comprising form carrying sections having form portions tele scopic in intersecting directions, and separate internal Wedgemechanisms for moving the same in each direction.

.3. it concrete form con'iprising a plurality of overlap i)in; jg 'l'orm carrying sections also having overlapping 'lorn'i portions, and internal 'e mechanism disposed alterlietwc n the same.

e. rete form comprising a plurality oi" telescc .v 0 form carrying sections also having overlap 'iin, "'orin portions, and internal wedge mechanism disposed alternately betvxeen tl e same aronnd a centra opening.

t. all. concrete :l orni comprising a plurality oi? telescopic torni carrying sections also having overlapping 't'orin portions, and internal wedge mechanisms disposed alternately between the same, certain 01? said mechanisms being .inovablc independently of the others.

It concrete form comprising a plurality oi? telescopic l'orni risarrying sections also having overlapping fOI'll'l portions, and internal Wedge mechanisms disposed alternately between the same with alternate mechanisms effecting movement. in the same direc tion.

(3. A syn'nnetrical concrete form coinprising a plurality of engaging expansible and collapsible form carrying sections also having overlapping form portions, and alternately disposed internal expanding and collapsing mechanisms acting between the same.

7. it. synnnetrical concrete form comprising a plurality of engaging enpansible and collapsible term carrying sections also having overlapping iorni portions, and a plurality of internal collapsing and expanding mechanisms each acting on aplurality thereof.

8. 4i. concrete form comprising a plurality of torn: carrying sections having mutually telescoping transverse ribs and also having overlapping tor-in portions.

ll. A. symmetrical concrete :lorm con1prising a plurality of form carrying sections having mutually telescoping portions thereon in the shape of overlapping form portions. and expanding n-edge mechanism therein disposed around a central opening in longitudinally spaced series of Wedges.

10. A rectangular concrete form comprising ezrpansibly ribbed form carrying corner sections also having overlapping form portions, and internal Wedge means disposed. alternately between adjacent sections.

ii. iii rectangular concrete form comprisin"; eizpansibly ribbed form carrying corner sections also having overlapping torin portions, and internal wedge means acting belapsing means acting between adjacent sections.

141:. A. svnimetrical rectangular concrete form comprising spaced cxpansibly and collapsibly ribbed form carrying corner sections also baring overlapping torin portions, and internal expanding and colla psing 1 cans dis posed alternately between adjacent sections.

15. A rectangular concrete form comprising spaced expansibly transversely ribbed 'jtorni carrying corner sections also having overlapping form portions, and Wedge mechanisms alternately disposed between adjacent sections and Within said portions.

A. rectangular concrete form comprisirg spaced expansibly transversely ribbed form carrying corner sections also having overlapping form portions, and Wedge n'uz lnuiisins alternately disposed between adjacent: sections and Within said portions, alt rnate mechanisms operating to expand in dit 'crent directions.

17. A rectangular concrete form comprising spaced ex 'iansibly transversely ribbed 'lfnin carrying corner sections also having overlapping form portions, and Wedge1nech- 2U11S1W alternately disposed between adja cent sections and Within said portions, alternate niechanisn'is operating to contract in different directions and each set being indepei'idently operable.

18. A rectangular concrete form co1nprising telescopically connected form carry ing corner sections also having overlapping form portions, and internal expanding means therefor operable to eiiiect expansions at right angles to one another.

If). A rectangular concrete form comprising telescopically connected form carrving corner sections also having overlap ping torni portions, and internal collapsing means tliereitor operable. to effect collapsing lllOVGlllGlllZS at right angles to one another.

A rectangular concrete form comprising; telescopically connected form carrying corner sections also having overlapping term portions, and internal expanding and collapsing means therefor operable at will to effect either expanding and collapsing movements in paths at right angles to one another.

9i. A rectangular concrete form comprising telescopically connected form carrying corner sections also having overlapping i'orm portions, and internal expanding means therefor operable to effect expansions at right angles to one another, said means being operable from an end of the form.

22. A rectangular concrete form comprisiiig telescopically connected form carrying corner sections also having overlapping form pcrtions, and internal collapsing means therc'tor operable to effect collapsing movements at right angles to one another, said means being operable trom an end of the term.

23. A rectangular concrete form comprisirg telescopically connected form carrying corner sections also having overlapping torm portions, and internal expanding and col apsing means therefor operable at Will to etect either expanding or collapsing lrovenrent in paths at right angles to one another, said means being operable from an end; oi the form.

4. A rectangular concrete form comprisiig identic diagonally opposite form carryi g corner sections n'mtually telescoping and also having their forms overlapping, and internal expansion varying means operable to eiiect movements in paths at right angles to one another.

A rectangular concrete form comprisir a identic diagonally opposite form carryii'ig corner sections mutually telescoping-and also having their forms overlapping, and a plurality of identic internal expansion vary-- ing means operable to effect movements in paths at right angles to one another.

26. A rectangular concrete "form comprising identic diagonally opposite ,form carry ng corner sections mutually telescoping and also having their forms overlapping, and a plurality of identic internal expansion varying means operable to efiect movements in paths at right angles to one another, said means being operable from an earl of the form.

27. A rectangular concrete form comprising sets of identic diagonally opposite form carrying corner sections mutually telescop ing, and a plurality of identic Wedge mechanisms each engaging one section of each set at d operable to eil ect movement in paths at right angles to one another.

28. A rectangular concrete form comprising sets of identic diagonal y opposite form cirrying corner sections mutually telescoping. stay blocks carried by each section, and identic Wedge mechanisms alternately disposed between sections and each engaging a stay block on each set of sections.

59, A rectangular concrete form comprising sets of identic diagonally opposite form carrying corner sections mutually telescopir e, stay blocks carried by each section, and dcut c wedge mechanisms alternately disposed between sections and each engaging a stay block on each set of sections, said Wedge mechanisms being operable from an end of the form.

30. A concrete form comprising a plurality o1 overlapping expansible form sections cooperating to produce a symmetrical form and each movable during expanding or collapsing ot the latter, and separate mechanisms within said form for moving each of said sections in different directions.

31. A concrete "form comprising a plurality of overlapping expansible form sections cooperating to produce a symmetrical form and each movable during expanding or collapsing of the latter, telescopic transverse ribs carried by said form sections Within the form, and separate mechanisms Within said form for moving each of said sections in different directions.

32. A concrete form comprising a plu ality ct overlapping expansible form sections cooperating to produce a symmetrical form and each movable during expanding or collapsing of. the latter, telescopic transverse ribs carried by said form sections Within the form, blocks carried in each of said sections, and separate mechanisms Within said form for moving each of said blocks in difl erent directions.

A concrete form comprising a plurality of overlapping form sections, transverse telescopic rib members spaced longitudinally along the form sections, and expanding means operable to cause expansion of said sections and ribs or .to permit contraction thereo't' comprising a plurality of longitudinally extending actuating members having at longitudinally spaced points thereon expanding members operatively associated with said rib members.

34. A concrete form comprising a plurality of overlapping form sections, transverse telescopic rib members spaced longitudinally along the form sections, and expandin means operable to cause expansion of said sections and ribs or to permit contraction thereof comprising a plurality of longitudinally extending actuating members having at longitudinally spaced points thereon expanding members operatively associated with said rib members, said expanding members being in the form of Wedges and said rib members being provided with surfaces adapted to cooperate With said Wedges.

35. A concrete form comprising a plurality of overlapping form sections, transverse telescopic rib members spaced longitudinally along the form sections, and expanding means operable to cause expansion of said sections and ribs or to permit contraction thereof comprising a plurality of longitudinally extending actuating members having at longitudinally spaced points thereon expanding members operatively associated recast/c With said rib members, said expanding members being in the term of Wedges and said rib members being provided With surfaces adapted to cooperate With said Wedges and to interlock therewith to permit longitudinal Withdrawal oi the Whole mechanism.

36. A concrete term comprising a phirah ity of overlapping elrpansilole term sections coope *ating to produce a symmetrical term and each movable during expanding or collapsing oi. the latter telescopic transverse ribs carried by said term sections Within the form stay blocks carried by each or said sections, and Wedge mechanisms acting hetween adjacent stay blocks oi diiterent sections for moving the latter.

3?. A concrete term comprising a plurality of overlapping erpansible form sections cooperating to produce a symmetrical form and each movable during expanding or collapsing of the latter, telescopic transverse ribs carried by said term sections Within the term, stay blocks carried by each of said sections, and Wedge mechanisms acting between adjacent stay blocks of dili erent sec tions for moving the latter, said Wedge mech nisms each having a portion received in a retaining slot in a plurality of stay blocks.

it concrete term comprising a plurality of overlapping enpansihle term sections cooperating to produce a syn'nnetrical form and each movable during spending or coll psing ot' the iatter telescopic transverse Iii/S carried by said iform sections Within the term, stay blocks carried by each of said sections and. Wedge mechanisms acting hetia'een adjacent stay blocks oi diiicrent sections for niovii'ig the latter, said Wedge mechanisms each raving a portion received in a rr-ztainingslot in a plurality of stay blocks and certain of said stay blocks be- 111 attached to certain oi said ribs While others of said stay blocks are attached to both said ribs and fOlIl'l sections.

lin testimony whereof l alibi my signature.

HAROLD EDWIN Nil YES. 

